Dastarcus longulus Sharp (Coleoptera: Bothrideridae) is expected to be an effective natural enemy of Monochamus alternatus Hope (Coleoptera: Cerambycidae) and other cerambycid beetles. However, methods for mass rearing of this parasitoid have been insufficiently prepared. We evaluated the effectiveness of using pupae of the giant mealworm beetle, Zophobas atratus Fabricius (Coleoptera: Tenebrionidae), as a substitute host for rearing D. longulus larvae. Although a higher rate of failed parasitism was observed compared with the cerambycid beetle Psacothea hilaris Pascoe (Coleoptera: Cerambycidae), successful parasitism and sufficient growth were confirmed using the pupae of Z. atratus. Furthermore, although there was a significant adverse effect on body size of D. longulus obtained from frozen pupae of Z. atratus compared with those from fresh pupae, frozen pupae have marked advantages regarding storage and transportation. Therefore, we conclude that frozen pupae of Z. atratus are useable as a substitute host for mass rearing of D. longulus larvae.
- Augmentative biological control
- Dastarcus longulus
- Frozen pupa
- Pine wilt disease
- Zophobas atratus